JPS6393467A - Net-like filter having excellent slag removing capacity - Google Patents
Net-like filter having excellent slag removing capacityInfo
- Publication number
- JPS6393467A JPS6393467A JP23855486A JP23855486A JPS6393467A JP S6393467 A JPS6393467 A JP S6393467A JP 23855486 A JP23855486 A JP 23855486A JP 23855486 A JP23855486 A JP 23855486A JP S6393467 A JPS6393467 A JP S6393467A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- net
- glass fibers
- slag
- woven fabric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002893 slag Substances 0.000 title abstract description 20
- 239000003365 glass fiber Substances 0.000 claims abstract description 18
- 239000008262 pumice Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims 2
- 239000004744 fabric Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 17
- 239000002759 woven fabric Substances 0.000 abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 13
- 230000008018 melting Effects 0.000 abstract description 6
- 238000002844 melting Methods 0.000 abstract description 6
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 229910052906 cristobalite Inorganic materials 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 238000010304 firing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910001018 Cast iron Inorganic materials 0.000 description 5
- 229910001208 Crucible steel Inorganic materials 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000005011 phenolic resin Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、鋳鉄や鋳鋼溶湯中に懸濁浮遊しているノロ、
スラグ等の非金属介在物の除去能力に優れた綿状フィル
ターに関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention is directed to the treatment of slag suspended in cast iron or molten cast steel.
This invention relates to a cotton-like filter that has excellent ability to remove non-metallic inclusions such as slag.
（従来の技術）
従来、ＳｉＯ□含有量の低いガラス繊維を網目状に織製
した網状織布にフェノール樹脂等の保形剤を被着させて
保形性を付与した網状フィルターがある。(Prior Art) Conventionally, there is a mesh filter in which a shape retention agent such as a phenol resin is coated on a mesh woven fabric made of glass fibers with a low SiO□ content to impart shape retention properties.
この網状フィルターは、アルミやその合金等の低融点金
属溶湯濾過用フィルターとして使用され、溶湯中のノロ
等の除去作用が優れているため注目されている。This mesh filter is used as a filter for filtering molten metals with low melting points such as aluminum and its alloys, and is attracting attention because of its excellent ability to remove slag and the like from the molten metal.
（発明が解決しようとする問題点）
しかしながら、かかる綱状フィルターは、耐熱性に劣る
ので、高融点の鋳鉄や鋳鋼の溶湯濾過用フィルターとし
て使用することができない。(Problems to be Solved by the Invention) However, such a wire filter has poor heat resistance and cannot be used as a filter for filtrating molten metal of cast iron or cast steel having a high melting point.
そこで、本発明者は、特願昭６０−２３５０３２号にお
いて、高融点溶湯に対しても使用できるガラス繊維製網
状フィルターを提案した。Therefore, in Japanese Patent Application No. 60-235032, the present inventor proposed a glass fiber mesh filter that can be used even for high melting point molten metals.
本発明者が提案した網状フィルターは、ガラス繊維中の
ＳｉＯ□含有量を７５重量％以上にすることで、耐熱性
を向上させ、高融点金属溶湯に対しても適用可能にした
ものである。The reticular filter proposed by the present inventor has improved heat resistance by increasing the SiO□ content in the glass fiber to 75% by weight or more, making it applicable to high-melting-point molten metals.
上記網状フィルターによって、鋳鉄や鋳鋼？８湯の′濾
過が可能になったが、除滓能力のより一層の向上が要望
されている。Is it cast iron or cast steel depending on the above mesh filter? Although it has become possible to filter 8 hot water, there is a need for further improvement in the slag removal ability.
本発明はかかる要望に鑑みなされたもので、除滓能力に
優れた高融点金属溶湯濾過用の綿状フィルターを提供す
ることを目的とする。The present invention was made in view of such a need, and an object of the present invention is to provide a cotton-like filter for filtration of high melting point metal molten metal that has excellent sludge removal ability.
（問題点を解決するだめの手段）
斜上の目的を達成するために講じられた本発明の手段は
、網状織布を形成するガラス繊維として、ＳｉＯ□含有
量が７５重量％以上のものを用い、該ガラス繊維で形成
された綱状織布に保形性を与えるための保形剤として、
粘結剤に天然軽石粉末が添加されたものを用いる点にあ
る。(Another Means to Solve the Problem) The means of the present invention taken to achieve the purpose of slanting is to use glass fibers containing 75% by weight or more of SiO□ as the glass fibers forming the reticulated woven fabric. As a shape-retaining agent for imparting shape-retaining properties to the rope-like woven fabric formed from the glass fibers,
The key point is that natural pumice powder is used as a binder.
（作用および実施例）
本発明の網状フィルターの素材として用いられる網状織
布は、直径３〜９μｍでＳｉＯ□組成が７５重量％以上
のガラス長繊維を束ねたものを織製して形成される。(Operations and Examples) The reticulated woven fabric used as the material for the reticulated filter of the present invention is formed by weaving a bundle of long glass fibers with a diameter of 3 to 9 μm and an SiO□ composition of 75% by weight or more. .
Ｓｉｎ２組成を７５重量％以上にするのは、１４５０℃
以下のあらゆる種類の鋳鉄溶湯に適合させるためである
。５１０２が高純度のものでは、１５００℃以上の鋳鋼
付溶湯に対しても適合可能になる。ここに、適合とは溶
湯中に２０秒間浸漬しても繊維がスラグ化しないことを
いう。前記２０秒間は、通常、注湯時間はこの程度以下
であるところから設定されたものである。Setting the Sin2 composition to 75% by weight or more is at 1450°C.
This is to make it compatible with all types of molten cast iron. If 5102 is of high purity, it can be applied to molten metal with cast steel of 1500°C or higher. Here, compatibility means that the fibers do not turn into slag even when immersed in molten metal for 20 seconds. The above-mentioned 20 seconds was set because the pouring time is usually within this range.
尚、ガラス繊維のＳｉｎ、含有量を上げるには、ガラス
繊維に酸性処理を施せばよい。ずなわら、塩酸、硝酸、
硫酸などの酸性溶液に反応促進のだめの触媒を加えた溶
液中に、シリカを主成分としたガラス繊維を浸漬し、温
度、時間、酸性溶液の濃度をコントロールしながら不純
物であるＣａｂ、 ＭｇＯ。Incidentally, in order to increase the Sin content of the glass fibers, the glass fibers may be subjected to acid treatment. Zunawara, hydrochloric acid, nitric acid,
Glass fibers mainly composed of silica are immersed in an acidic solution such as sulfuric acid and a catalyst to accelerate the reaction, and impurities such as Cab and MgO are removed while controlling the temperature, time, and concentration of the acidic solution.
Ｆｅ２０１＋ Ｃｒ２０ｓ＋ Ｎａ２０２１ Ｋ２Ｏ１
Ｔｉ０ｚ、 Ｂ２０ｓなどの含有率を下げ、その結果
として５ｉ０２の含有量を上げるのである。Fe201+ Cr20s+ Na2021 K2O1
The content of Ti0z, B20s, etc. is lowered, and as a result, the content of 5i02 is increased.
網状織布の目開きサイズは、溶湯中のノロやスラグ等の
大きさにもよるが、通常、０．４〜４ｉで充分である。The opening size of the reticulated woven fabric depends on the size of slag, slag, etc. in the molten metal, but 0.4 to 4i is usually sufficient.
網状織布は、下記の保形剤を被着させて保形性を付与す
る前に、焼成により予め収縮させておくのがよい。その
理由は、酸性処理されたシリカ繊維中には多くの気孔が
存在しており、この気孔のため濾過中に綱状織布が収縮
する。この収縮が太きいと、溶湯流路にセントされ、上
型と下型とによって鋳型見切り面に挟持された網状フィ
ルターは、フィルターの押え部の鋳物砂を溶湯中にかき
落して砂かみなどの鋳造欠陥を誘発させたり、鋳型の砂
硬度が高い場合はフィルターを損傷させたりするからで
ある。It is preferable that the net-like woven fabric is previously shrunk by firing before being coated with the following shape-retaining agent to impart shape-retaining properties. The reason for this is that there are many pores in the acid-treated silica fibers, and these pores cause the rope-like woven fabric to shrink during filtration. If this contraction is large, the mesh filter, which is inserted into the molten metal flow path and sandwiched between the upper mold and the lower mold parting surface, will scrape the molding sand from the filter holding part into the molten metal, causing the sand filter to drain into the molten metal. This is because it may induce casting defects or damage the filter if the sand hardness of the mold is high.
焼成温度が高くかつ焼成時間が長いほど加熱収縮率は大
きくなり、網状フィルターの収縮は小さくなって好都合
であるが、通常、加熱収縮率は２゜５〜１５％で充分で
ある。尚、加熱収縮率とは、焼成前の繊維束（糸）の長
さを２、焼成後の長さをｌ′としたとき、１００ Ｘ
（１−７！°）／＊で表わされる。The higher the firing temperature and the longer the firing time, the higher the heat shrinkage rate and the smaller the shrinkage of the mesh filter, which is advantageous, but usually a heat shrinkage rate of 2.5 to 15% is sufficient. The heat shrinkage rate is 100 X, where the length of the fiber bundle (thread) before firing is 2 and the length after firing is l'.
It is expressed as (1-7!°)/*.
尚、上記加熱収縮率は８００℃Ｘ３０分乃至１）００℃
×５〜１０分程度の焼成により得られる。１）００℃を
越えるとシリカ繊維がクリストバライト変態を起こし脆
化するので、焼成温度は１）００’Ｃ以下で行うことが
必要である。In addition, the above heating shrinkage rate is 800℃ x 30 minutes to 1) 00℃
* Obtained by firing for about 5 to 10 minutes. 1) If the temperature exceeds 00°C, the silica fiber undergoes cristobalite transformation and becomes brittle, so the firing temperature must be 1) 00'C or lower.
網状織布に保形性を与えるための保形剤は、粘結剤と天
然軽石粉末との混合物が用いられる。A mixture of a binder and natural pumice powder is used as a shape retaining agent to impart shape retaining properties to the reticulated woven fabric.
粘結剤としては、酸性ノボラック系フェノールレジン、
中性フェノールレジン、澱粉糊、酸性シリカゾル溶液等
を例示できる。As a binder, acidic novolak phenol resin,
Examples include neutral phenol resin, starch paste, and acidic silica sol solution.
粘結剤に添加される天然軽石は、網状フィルター構成の
シリカ長繊維と同一のＳｉＯ□分を約７０％、Ａ Ｉ２
． Ｃｈを約１７％含有しており、スラグ吸着表面積を
大きくする為に粒状に粉砕したものを用いる。The natural pumice added to the binder contains about 70% SiO□, which is the same as the silica long fibers in the network filter structure, and A I2
．． It contains approximately 17% Ch, and is used in pulverized form to increase the slag adsorption surface area.
天然軽石の成分が酸性のＳｉＯ□より成ることから吸着
されるスラグはＣａＯ、ＭｇＯの塩基性スラグが主であ
る。Since the component of natural pumice is acidic SiO□, the slag that is adsorbed is mainly basic slag of CaO and MgO.
天然軽石の粒度は、６０メツシュ以上の微粉がよい。６
０メソシユ以下の粗粉では、使用粘結剤中に充分攪拌混
合されず、網状織布に均一に塗布されにくい。The particle size of natural pumice is preferably 60 mesh or more. 6
If the coarse powder is less than 0 mesosinus, it will not be sufficiently stirred and mixed into the binder used, and it will be difficult to uniformly apply it to the reticulated woven fabric.
また、天然軽石の保形剤に占める含有量は、体積％で５
〜３０％がよい。５％未満では、粘結剤に混合して網状
織布に塗布後、フィルターとして使用した時、顕著なス
ラグ吸着効果の向上が認められず、３０％を越えると網
状織布に塗布の際、目づまりを起こしやすい。In addition, the content of natural pumice as a shape retainer is 5% by volume.
~30% is good. If it is less than 5%, no significant improvement in slag adsorption effect will be observed when it is mixed with a binder and applied to a reticulated woven fabric and used as a filter; if it exceeds 30%, when applied to a reticulated woven fabric, Easy to cause clogging.
保形剤が被着された網状織布は、適宜乾燥されてサイジ
ングされ、製品とされる。The reticulated woven fabric coated with the shape retaining agent is appropriately dried and sized to produce a product.
次に具体的実施例について説明する。Next, specific examples will be described.
（１） ＳｉＯ□含有量が７５重量％のガラス繊維に
よって形成された網状織布が、フェノールレジン溶液の
みによって保形された網状フィルター（比較例）と、天
然軽石粉末がフェノールレジン溶液中に添加された保形
剤によって保形された網状フィルター（実施例）を製作
した。尚、実施例における天然軽石粉末の粒径は１２０
メツシユスルー、添加量は全量に対して１５体積％であ
る。(1) A mesh filter (comparative example) in which a mesh woven fabric made of glass fiber with a SiO□ content of 75% by weight was maintained in shape only by a phenol resin solution, and a mesh filter in which natural pumice powder was added to the phenol resin solution. A reticular filter (Example) whose shape was retained using the above-mentioned shape retention agent was manufactured. In addition, the particle size of the natural pumice powder in the examples is 120
The amount added is 15% by volume based on the total amount.
又、フィルターの目開きサイズはＩＸｌ、５１■、開口
率は２２．５％である。Further, the opening size of the filter is IXl, 51 cm, and the aperture ratio is 22.5%.
（２）実施例、比較例のフィルターを１００ Ｘ１００
ｗｍにサイジングした後、１４００〜１４５０℃の鋳
Ｓ１容を易表面に３０秒間載置した後取出して、フィル
ターのスラグによる目づまり面積を調べた。(2) Filters of Examples and Comparative Examples 100 x 100
After sizing to wm, a cast S1 volume heated at 1400 to 1450°C was placed on an easy surface for 30 seconds and then taken out, and the area of the filter clogged with slag was examined.
（３） スラグ除滓効果を下記式で表わして、実施例
と比較例とを計算した結果、次の値が得られた。(3) The slag removal effect was expressed by the following formula, and as a result of calculations for Examples and Comparative Examples, the following values were obtained.
載直面開口血槓
実施例 ・・・・・・ ４０〜７０％
比較例 ・・・・・・ １０〜３０％
（４） スラグ除滓効果は、フィルターのスラグ吸着
効果の良否を表わしており、高い値はど除滓能力が優れ
ている。（３）の結果より、実施例は従来例に比べて、
スラグ除滓効果が掻めて大きいことが確かめられた。尚
、実施例、比較例とも、フィルターのスラグ化は生じな
かった。Examples of blood sludge with openings on the mounting surface: 40 to 70% Comparative examples: 10 to 30% (4) The slag removal effect indicates the quality of the slag adsorption effect of the filter. The higher the value, the better the slag removal ability. From the results of (3), compared to the conventional example, the example
It was confirmed that the slag removal effect was significant. Incidentally, in both Examples and Comparative Examples, slagging of the filter did not occur.
（発明の効果）
以上説明した通り、本発明の網状フィルターは所定量の
５ｉｎ２を含有したガラス繊維によって、網状織布を形
成したものであるから、耐熱性に優れ、鋳鉄や鋳鋼等高
融点金属溶湯中の非金属介在物を濾過除去することがで
きる。(Effects of the Invention) As explained above, the reticular filter of the present invention has a reticular woven fabric made of glass fibers containing a predetermined amount of 5in2, so it has excellent heat resistance and can be used with high melting point metals such as cast iron and cast steel. Non-metallic inclusions in the molten metal can be filtered out.
また、網状織布は天然軽石粉末が添加された保形剤によ
って保形されているので、除滓能力に極めて優れる。Furthermore, since the reticulated woven fabric is retained in shape by a shape retaining agent to which natural pumice powder is added, it has extremely excellent sludge removal ability.
Claims (1)
されて保形された網状フィルターにおいて、ガラス繊維
はＳｉＯ＿２含有量が７５重量％以上であり、保形剤は
粘結剤に天然軽石粉末が添加されていることを特徴とす
る除滓能力に優れた網状フィルター。(1) In a mesh filter whose shape is maintained by adhering a shape preservation agent to a mesh fabric made of glass fibers, the glass fiber has an SiO_2 content of 75% by weight or more, and the shape preservation agent is a binder. A mesh filter with excellent sludge removal ability, characterized by the addition of natural pumice powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23855486A JP2514006B2 (en) | 1986-10-06 | 1986-10-06 | A mesh filter with excellent slag removal performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23855486A JP2514006B2 (en) | 1986-10-06 | 1986-10-06 | A mesh filter with excellent slag removal performance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6393467A true JPS6393467A (en) | 1988-04-23 |
| JP2514006B2 JP2514006B2 (en) | 1996-07-10 |
Family
ID=17031966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23855486A Expired - Lifetime JP2514006B2 (en) | 1986-10-06 | 1986-10-06 | A mesh filter with excellent slag removal performance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2514006B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011045925A (en) * | 2009-07-29 | 2011-03-10 | Tokyo Kogyo Boyeki Shokai Ltd | Method for manufacturing filtering medium for molten metal, and filtering medium for molten metal |
| JP2017518616A (en) * | 2014-06-12 | 2017-07-06 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Separator for electrochemical storage device, method for manufacturing electrode material, and electrochemical energy storage device |
| FR3068261A1 (en) * | 2017-06-29 | 2019-01-04 | Equipement Industriel Pinet | METHOD FOR MANUFACTURING A GEOPOLYMER-BASED FILTER AND GEOPOLYMER-BASED FILTER THUS OBTAINED |
| CN111533582A (en) * | 2020-04-26 | 2020-08-14 | 上海伊索热能技术股份有限公司 | Preparation method for removing slag of ceramic fiber |
-
1986
- 1986-10-06 JP JP23855486A patent/JP2514006B2/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011045925A (en) * | 2009-07-29 | 2011-03-10 | Tokyo Kogyo Boyeki Shokai Ltd | Method for manufacturing filtering medium for molten metal, and filtering medium for molten metal |
| JP2013006219A (en) * | 2009-07-29 | 2013-01-10 | Tokyo Kogyo Boyeki Shokai Ltd | Filter medium for molten metal |
| JP2017518616A (en) * | 2014-06-12 | 2017-07-06 | ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ | Separator for electrochemical storage device, method for manufacturing electrode material, and electrochemical energy storage device |
| US10290846B2 (en) | 2014-06-12 | 2019-05-14 | Daimler Ag | Separator for an electrochemical storage system, method for the production of an electrode material and electrochemical energy storage system |
| FR3068261A1 (en) * | 2017-06-29 | 2019-01-04 | Equipement Industriel Pinet | METHOD FOR MANUFACTURING A GEOPOLYMER-BASED FILTER AND GEOPOLYMER-BASED FILTER THUS OBTAINED |
| CN111533582A (en) * | 2020-04-26 | 2020-08-14 | 上海伊索热能技术股份有限公司 | Preparation method for removing slag of ceramic fiber |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2514006B2 (en) | 1996-07-10 |
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